RADIOMETER ABL90 FLEX User Manual

8. Parameters ABL90 FLEX reference manual
8-2
General information
The Deep Picture developed by Radiometer [1] (visit our website www.deep-
picture.com) expands traditional pH and blood gas analysis by evaluating the
capability of arterial blood to carry sufficient oxygen to tissues and to release it.
It simplifies interpretation by dividing the process into three stages:
Stage Description
Oxygen
uptake
Oxygen uptake in the lungs indicates whether the pulmonary gas
exchange is efficient enough to oxygenate arterial blood.
The uptake of oxygen in the lungs can be described by
parameters in combination, primarily the arterial oxygen tension
(pO
2
(a)), fraction of O
2
in dry inspired air (FO
2
(I)) and shunt
fraction of perfused blood (Q
s
·
/Q
·
t
)
However, other parameters may also be used, such as the
difference in alveolar air and arterial blood oxygen tension
(pO
2
(A-a)).
Oxygen
transport
Oxygen transport reveals if arterial blood contains sufficient
oxygen.
The oxygen concentration of arterial blood (ctO
2
(a)) also termed
oxygen content is determined by the concentration of total
hemoglobin (ctHb(a)), the fraction of oxygenated hemoglobin
(FO
2
Hb(a)) and the arterial oxygen tension (pO
2
(a)).
Other parameters that should be known are the oxygen
saturation (sO
2
(a)) and the fractions of dyshemoglobins
(FCOHb(a) and FMetHb(a)).
Oxygen
release
Oxygen release describes the ability of arterial blood to release
oxygen to the tissues.
The release of oxygen from capillaries to tissues is determined by
the oxygen tension gradient between the two. This release of
oxygen is also influenced by the hemoglobin-oxygen affinity,
which is indicated by the oxygen tension at 50 % saturation,
p50.
The Deep
Picture

RADIOMETER ABL90 FLEX Specifications

General

Brand	RADIOMETER
Model	ABL90 FLEX
Category	Measuring Instruments
Language	English